Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B13 5 8X5 8BORE found under Coupling Shaft Rigid by Charles Bond Company. The National Stock Number assigned to this part is 3010013029204, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B13 5 8X5 8BORE.